Problem -based Scenarios in Practice E-learning for plant disease - - PowerPoint PPT Presentation

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Mar 27, 2023 250 likes •520 views

Problem -based Scenarios in Practice E-learning for plant disease diagnosis Problem-based Scenarios for Plant Disease Diagnosis The why? Diagnosis is more than just identification of a suspected causal agent The diagnostician:

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E-learning for plant disease diagnosis

Problem -based Scenarios in Practice

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Problem-based Scenarios for Plant Disease Diagnosis

The why?

Diagnosis is more than just

identification of a suspected causal agent

The diagnostician:

Need to follow a deductive

process

Needs to integrate and

apply knowledge from a variety of disciplines

How could we teach students “the art” of plant

disease diagnosis?

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Problem-based Scenarios for Plant Disease Diagnosis

The wherefores

A “virtual” environment that contains plants

with problems (a problem-based scenario)

Student must interact with this environment,

examining objects, carrying out tests, eliciting information from “actors”

Forming hypotheses and proving/ disproving

them, the goal being to:

diagnosis the problem justify the diagnosis provide recommendations of how to fix the

problem

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Needed software with this functionality…

Ability to specify locations, tasks and tests Conditional revelations Objects collectable and transportable Tracking of students Tailored feedback depending on actions Associate costs with activities Student reporting Easy-to-author scenarios

Problem-based Scenarios for Plant Disease Diagnosis

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DIAGNOSIS V 1 (1991)

MS-DOS Text and

Pictures

Line-based, two

word “verb- noun” interface.

Big vocabulary

needed to pick up synonyms

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DIAGNOSIS for Mac (1993)

HyperCard Graphical “drop

and drag” interface

Generic plant

and generic lab

Fully multimedia

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DIAGNOSIS V 2 (1995) (with UQ, Aust.)

Windows 3.1 Menu driven Fully Multimedia New tasks and

bservations

Accommodated

insect problems

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DIAGNOSIS V 3 (2003)

98/ ME/ XP/ NT/ 2000/ No “fixed” tasks. All defined in the

scenario

Accommodates hyperlinks Allows tutor-directed Help Player is “Frame” based Builder uses a Windows Explorer

metaphor

Accommodates multi-choice Can sequence activities

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Problem-based Scenarios for Plant Disease Diagnosis

Screenshots from the Diagnosis for

Crop Problems Player i.e. the student’s view… .

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Click here for video

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Click to see report

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Problem-based Scenarios for Plant Disease Diagnosis

Screenshot from the Diagnosis for

Crop Problems Builder i.e. the tutor’s/ author’s view… .

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Problem-based Scenarios for Plant Disease Diagnosis

Scenarios:

Allow students to explore a number of likely

hypotheses

Use an “Adventure-game” metaphor Use a 2nd person perspective Incorporate characterisation and humour

where possible

Contain misleading clues and “red-herrings” May suggest, lead, guide and interpret (or

NOT!) as appropriate

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Student Survey 2002-2004

8 SD < 0.01 1 11 11 These exercises helped m e im prove m y know ledge of the diagnostic process 4 1 U < 0.01 10 1 I w ould have learnt m ore from just covering diagnostic exam ples given in form al lectures, rather than using the softw are < 0.01 1 12 9 The interface w as intuitive and easy to use < 0.01 1 8 14 I enjoyed these exercises CHI D A SA Question

SA= Strongly agree, A= Agree, U= Undecided, D= Disagree, SD= Strongly Disagree 23 students

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Student Survey 2002-2004 (cont…)

1 8 SD 0.04 2 9 7 4 I prefer to go through a scenario w ith one other, rather than by m yself 3 2 U < 0.01 13 7 I found the typed "Creator’s Solution" feedback com m ents on the returned script helpful < 0.01 12 1 I w ould have learnt m ore from just being given diagnostic exam ples in w ritten form to read about at hom e, rather than using the softw are CHI D A SA Question

SA= Strongly agree, A= Agree, U= Undecided, D= Disagree, SD= Strongly Disagree 23 students

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Problem-based Scenarios for Plant Disease Diagnosis – Some wisdom

Storyboarding scenarios can be the most

difficult part of the exercise

“Embedding” into the course is important Careful thought needs to be given to..

Learning Objectives Time-Frame Student Resources Team-play

Some value in student’s creating their

OWN scenarios

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DIAGNOSIS Extras

Scenario Creation Guide Assists teachers in

developing, documenting and storyboarding diagnostic scenarios

Support Website www.diagnosis.co.nz Free scenarios Student Builder Allows Students to

construct scenarios

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Spin-off developments (2005- )

A generic version of DIAGNOSIS

CHALLENGE FRAP (Form for Recording the

Analysis of Problems)

Derivation of the CHALLENGE Builder Acts as both a guide and a recording

template for problem-based exercises

PBL-Interactive

UQ software. An advance on CHALLENGE

which includes a web-based player

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Spin-off developments (2005- )

E-CDF Project 512

Produce enhanced versions of

CHALLENGE FRAP PBL-Interactive

Manuals and support material Fifteen exemplar PBL-i scenarios Make all of the above available to TEIs http: / / pbl.massey.ac.nz